Review on Amazfit Bip U Smart Watch Fitness Tracker with 60+ Sports Modes, 9-Day Battery Life, Blood Oxygen Monitor, and Water Resistance for Men and Women - Compatible with iPhone and Android Phones (Black) by Iyaan Betrann ᠌

In general, everything was fine, the interface is certainly not the most convenient, but quite satisfied. The next firmware ate has arrived - and that's it, the clock has turned into a pumpkin. Sleep is not tracked at all, they begin to vibrate steadily on the arm at 5 o'clock in the morning (as with a reboot, this is not a reminder to "move"), sometimes this happened when going to the movies, when you sit motionless for 15-20 minutes, and so several times in a row. As a result, the clock does not perform its functions properly, and it also interferes with sleep. I wrote in feedback, but it seems to be for show - there are no ates that would fix this, no response from them.